package org.smart4j.framework.helper;

import org.smart4j.framework.util.ReflectionUtil;

import java.util.HashMap;
import java.util.Map;
import java.util.Set;

/**
 * Bean 助手类
 * @author ：Anitaxiaofeng
 * @description：
 * @create 2017-12-15
 **/
public  final class BeanHelper {

    private static Map<Class<?>,Object> BEAN_MAP = new HashMap<Class<?>,Object>();

    static {
        Set<Class<?>> beanClassSet = ClassHelper.getBeanClassSet();
        for(Class<?> beanClass : beanClassSet){
            Object obj = ReflectionUtil.newInstance(beanClass);
            BEAN_MAP.put(beanClass,obj);
        }
    }

    /**
     * 获取Bean映射
     * @return
     */
    public static Map<Class<?>,Object> getBeanMap(){
        return BEAN_MAP;
    }


    /**
     * 获取Bean实例
     * @param cls
     * @param <T>
     * @return
     */
    public static <T> T getBean(Class<T> cls){
        if(!BEAN_MAP.containsKey(cls)){
            throw new RuntimeException("can not get bean by class:" + cls);
        }
        return (T) BEAN_MAP.get(cls);
    }

    /**
     *设置Bean实例
     *  @param cls
     * @param obj
     */
    public static void setBean(Class<?> cls,Object obj){
        BEAN_MAP.put(cls,obj);
    }
}
